org.neo4j.graphdb.index

Interface ReadableIndex<T extends PropertyContainer>

Type Parameters:

T - The Primitive this Index holds

All Known Subinterfaces:

Index<T>, ReadableRelationshipIndex, RelationshipIndex

public interface ReadableIndex<T extends PropertyContainer>

An index that allows for read only operations. Can also be seen as a chopped down version of Index that disallows mutating operations.

Method Summary

Modifier and Type	Method and Description
IndexHits<T>	get(String key, Object value) Returns exact matches from this index, given the key/value pair.
Class<T>	getEntityType()
GraphDatabaseService	getGraphDatabase() Get the graph database that owns this index.
String	getName()
boolean	isWriteable() A ReadableIndex is possible to support mutating operations as well.
IndexHits<T>	query(Object queryOrQueryObject) Returns matches from this index based on the supplied query object, which can be a query string or an implementation-specific query object.
IndexHits<T>	query(String key, Object queryOrQueryObject) Returns matches from this index based on the supplied key and query object, which can be a query string or an implementation-specific query object.

Method Detail

getName

String getName()

Returns:

the name of the index, i.e. the name this index was created with.

getEntityType

Class<T> getEntityType()

Returns:

the type of entities are managed by this index.

get

IndexHits<T> get(String key,
                 Object value)

Returns exact matches from this index, given the key/value pair. Matches will be for key/value pairs just as they were added by the Index.add(PropertyContainer, String, Object) method.

Parameters:

key - the key in the key/value pair to match.

value - the value in the key/value pair to match.

Returns:

the result wrapped in an IndexHits object. If the entire result set isn't looped through, IndexHits.close() must be called before disposing of the result.

query

IndexHits<T> query(String key,
                   Object queryOrQueryObject)

Returns matches from this index based on the supplied key and query object, which can be a query string or an implementation-specific query object.

Parameters:

key - the key in this query.

queryOrQueryObject - the query for the key to match.

Returns:

the result wrapped in an IndexHits object. If the entire result set isn't looped through, IndexHits.close() must be called before disposing of the result.

query

IndexHits<T> query(Object queryOrQueryObject)

Returns matches from this index based on the supplied query object, which can be a query string or an implementation-specific query object.

Parameters:

queryOrQueryObject - the query to match.

Returns:

the result wrapped in an IndexHits object. If the entire result set isn't looped through, IndexHits.close() must be called before disposing of the result.

isWriteable

boolean isWriteable()

A ReadableIndex is possible to support mutating operations as well. This method returns true iff such operations are supported by the implementation.

Returns:

true iff mutating operations are supported.

getGraphDatabase

GraphDatabaseService getGraphDatabase()

Get the graph database that owns this index.

Returns:

the graph database that owns this index.